Pneumatic material conveyer



p 6, 1927- a. BERNEQIRT PNEUMATIC MATERIAL CONVEYER Filed July 12, 1926emi- O Baum Harm-L;

Patented Sept. 6, 1927.

UNITED STATES GEORGE BERNERT, F MILWAUKEE, WISCONSIN.

PNEUMATIC MATERIAL CONVEYER.

Application filed July 12,

This invention relates to certain new and useful improvements inpneumatic material conveyers and, refers more particularly toa dischargedevice for the conveying. duct.

lVhen grain or other material is discharged from a pneumatic conveyerand it is unnecessary that the. material have momentum, it is ofimportance that the grain be brought'under control and with this in mindit is an object of my invention to provide an improved discharge nozzlefor the conveying duct whereby the conveying current of air isdischarged at an inner point and the material discharged from the outerend.

It is a further object of this invention to provide an improveddischarge means for pneumatic grain oonveyers which may be readilyapplied to any conveying duct and which is constructed of sheet metal tobe of portable construction.

And a still further object of this invention resides in .the provisionof an improved grain or other material discharge or conveying ducthaving means for simultaneously adjusting the grain and the air ductoutlets.

lVith the above andother objects in view whichvvill appear as thedescription proceeds, my invention resides in the novel construction,combination and arrangement of parts substantially as hereinafterdescribed and more particularly defined by the appended claims, it beingunderstood that such changes in the precise embodiment of the hereindisclosed invention may be made as come within the scope of the claims.-In the accompanying drawing, I have illustrated one complete example ofthe physical cn'ibodiment of my invention constructed according to thebest mode I have so far devised for the practical application of theprinciples thereof, and in which:

Figure l is a side view of a grain or other material discharge nozzleembodying my invent1on, parts thereof being in side elevation and partsthereof broken away and in section to illustrate structural details, and

Figure 2 is an end elevational view thereof taken on the plane of theline 22 of F igure 1.

Referring noW more particularly to the accompanying drawing, the numeral5 designates the conveying duct of a neumatic conveying apparatus ofconventional construction, including a blower and means for 1926. SerialNo. 121x69.

feeding the grain or other material to be conveyed into the duct 5 to beconveyed ihercthrough by the pressure current of air created therein bythe blower. Theconveying mechanism proper forms no part of thisinvention and for one type of device, attention is invited to LettersPatent No. 1.498,?76 issued to me the 24th day of June, 1924:.

My improved device is removably secured to the discharge end of the duct5 by means of mating flanges or collars 6 and bolts or other means 7 andconsists of an approximately rectangular sha ed receptacle 8 preferablyformed fromsheet metal having its sides 9 widerat their inner ends andriveted or otherwise secured, as at 10, to the bottom and top thereofdesignated 11 and 12, respectively. The top and bottom have their sidemarginal edges flanged, as at 13, to overlie the adjacent marginal edgesof the sides to receive the rivets 10.

The major portion of the inner or receivmg end of the receptacle isclosed by a wall 14, the side marginal edges of which are flangedinwardly to engage the side walls and receive rivets or other means 15for securing the same thereto and an annular ring or collar member 16 isfixed to the end wall to receive a nipple or duct 17 on the outer end ofwhich one of the rings or flanges 6 is secured. The outer or dischargeend of the nozzle is open so that the grain and conveying current of airdesignated, as 18 and 19, respectively, discharge outwardly therethroughwith the exception of such air as may escape through an opening 20provided above the end wall.

The .top 12 terminates inwardly of the inner end and pivoted, as at 21,adjacent the outer marginal edges of the sides 9 and medially of theinner end of the ,top 12 and the opening 20, is an elongated valvemember 22 of a width equal to the distance between the sides. 9 and of alength substantially equal tothe length of the discharge nozzle. 'Theportion 23 of the member 22 outwardly of the pivot 21 forms a valve foradjusting the cross sectional area of the grain or other materialdischarge opening and the portion 24 of the member 22 rearwardly of thepivot 24 forms a valve for increasing and decreasing the cross-sectionalarea of the discharge opening 20.

A perforated bar or lever 25 is pivoted, as at 26, to the member22adjacent its upper readily permit of the quickly made as end and passesthrough a slot or opening 27 in the top 12. A latch member 28 ismedially pivoted, as at 29, to the top 12 and has one end 30 arrangedfor engagement in any one of the plurality of apertures 31 in the lever25, its other end being bent upwardly, as at 32, for convenience inengaging and disengaging the end 30 with the apertures of the lever; Inthis manner, the adjustment of the member 22 may be will be readilyevident.

The side walls 9 are provided with sets of aligned apertures 33 whichcorrespond with apertures 34 in the side flanges of the member 22 so"that the pivot 21 may be shifted to vary the cross-sectional areas ofthe material and air discharge openings.

In use, the discharge nozzle is normally inclined downwardly asillustrated in the drawing and the member 22 is so adjusted that thematerial 18 accumulates in its outer end falling outwardly between theend 23 of the member 22 and the bottom 11, as indicated, the conveyingcurrent of air being released outwardly through the open ing 20. Theapertures 33 and 34 and the latch member 28 permit the ready adjustmentof the member 22 to control the s eed at which the material 18 isdischarged :trom the nozzle, as thearea of one opening i decreased asthe other is increased. 7

From the foregoing description taken in connection with the accompanyingdrawing it will be readily evident to those skilled in the art to whichan invention of this character appertains that I have provided animproved duct of a pneumatic conveyer which will controlled discharge ofmaterial such as grain or the like from the duct and its separation fromthe conve ing current of air.

at I claim as my invention is:

L In an appliance of the character described, a discharge member forpneumatic conveying devices having a material outlet and an air outlet,and means for adjusting the areas of said outlets.

2. In an appliance of the character de scribed, a discharge member forpneumatic conveying devices having a material outlet and an air outlet,and means for simultaneously adjusting the areas of said outlets.

3. In an appliance scribed, a disc arge member for pneumatic attachmentfor the conveying of the character deconveying devices having a materialoutlet and an air outlet, means for adjusting the areas of said outlets,and means whereby the area of one outlet is decreased as the area of theother is increased.

4. In an appliance of the character described, a discharge member forpenumatic conveying devices and having a material outlet and an airoutlet, valve meansextend ing from the air outlet to the materialoutlet, and means for adjusting the valve means to govern the area ofthe material outlet.

5. In anappliance oi the character described, a housing having amaterial discharge opening in-its lower end and an air discharge openingin its uppermost portion, and cooperating means operable to decrease thearea of one opening and increase the area of the other.

(i. In an, appliance of the character described, a housing having amaterial discharge openingin its lower end and an air discharge openingin its uppermost portion, a valve member, means medially pivoting thevalve member in one end controls the area of oneopening and the otherend the area of the other opening, and means. for moving said member onits pivot to adjust the areas of said openings.

7. In an appliance of the character described, a housing having amaterial discharge opening in its discharge opening in its uppermostportion, a valve'member, means medially pivoting the valve member in thehousing whereby one end controls the area of one opening area of theother means for moving said member on its pivot to adjust the areas ofsaid openings, and means for securing the valve member in adjustedposition.

8. In an appliance of the character described, a discharge member forpneumatic conveying devices having a material inlet and outlet connectedby a material passage through said member, an air outlet leading fromsaid member and communicating with the material passageway adjacent thematerial inlet, and means for adjusting the area of said outlets.

and the other end the opening,

In testimony whereof I afiix my signature.

' GEORGE BERNERT.

lower end and an airv

